Inductance apparatus



March 13, I928.

. B. J. SIMMONS INDUCTANCE APPARATUS Filed NOV-1 1925 Patented Mar. 13, 1928.

UNITED STATES BERT JOSEPH SIMMONS, OF STILLWATER, MINNESOTA.

INDUGTANGE APPARATUS.

Application filed November This invention relates to a means for producing a compound electro-magnetic cycle useful for many purposes, as in the production of step-up and potential transformers,

5 field units of electro-generators, reactance coils, radio coils, etc., and, by a reversal of current, low step-down transformers, hea generators etc.

With the foregoing and other objects in 1 view which will appear as the description proceeds, the invention resides in certain novel details and combinations which will be hereinafter more fully described and pointed out in the claims:

In the accompanying drawings,

Figure 1 is a perspective view showing the simplest embodiment of the invention in a two unit structure.

Figure 2 is a perspective view of a four unit potential transformer formed of compound electromagnetic cycles.

Figure 3 is a diagram showing the relative relations of the coils of the structure shown in Figure 1..

Figure 4 is a diagram showin the results heretofore attained by the use of magnets in series.

Figure 5 is a view in diagram of another old arrangement of coils.

Previous to my invention in each and every instance where electromagnetism was produced by more than one coil in the same magnetic field or circuit the magnetism from one coil always threaded thru the other coil or coils before returning or completing its cycle, as in Figure 4 wherein the magnetism of each coil l is united into a series formation resulting in a prolonged magnetic cycle.

Even in some cases where the magnetism of one coil 2 is split up into separate paths and each passing thru another coil 2 as in Figure 5, it has still been a series formation, because in this case each half of the magnetism of each coil unites into a series formation with half of the magnetism of the coil next to it.

This is the basic principle and use of electromagnetism today and covers every known instance and may now be referred to as the old unicycle magnetism (single circuit).

My invention (compound electromagnetic cycles) constitutes a radical departure from the old method of utilizing electromagnetism.

With this new method the magnetisms of 16, 1925. Serial No. 69,535.

each of two or more coils are placed in parallel planes and are entirely independent of each other, as in Figure 1 wherein the coils 3 are conductors and to utilize these thru electromagnetic induction I place'an inductor coil 4 in such a manner that the magnetic circuits of all the conductor coils will pass thru it in common, In this case the induced voltage is increased per unit turn as compared to applied voltage per unit turn of each of the conductor coils, in direct proportion to number of conductor coils or in other words magnetic cycles.

This effect is reversed however when the electromagnetism from a conductor coil is split up into parallel paths and an inductor coil around each separate path. In this case the induced voltage per unit turn in the inductor coils is decreased as compared to the applied voltage per unit turn in the conductor coil, the same construction being used as in Figure 1.

Altho this method is very simple in physical arrangement the electromagnetic induc tion is very effective when applied to electric generators, transformers and most every other electrical apparatus, and the structures can be built up in many ways. In

Figure 2 a four unit device having twice the efficiency of the form illustrated in Figure 1 has been shown. In this structure the inductor coil has been shown at 5 and the conductor coils at 6.

Referring specifically to Figure 1 the coil windings 4 carrying the induced current and the coil windings 3 carrying the inducing current are arranged to form a two unit structure. The winding is such that the induced potential per unit-turn in coil 4 will be twice the potential per unit turn in each of coils 3. Consequently the actual ampere turns in coil 4 will be reducechto onehalf the combined ampere turns of coils 3 and therefore the density of magnetic flux set up by coil 4 will be only one-half the combined density of flux set up by coils 8.

This effect is reversed when coil 4 represents the inducing current and coils 3 represent the induced current whereby the induced potential per unit-turn in coils 3 is reduced to one-half the potential per unitturn of coil 4 and consequently coils 3 have twice the actual ampere turns and density of magnetic flux that coil 4 will have.

The former effect is very valuable in many instances especially in the step-up transformers, reactance coils, radio coils and elec' tro-generators.

The latter, inverse effect is also valuable in many instances such as low step-down transformers, electroheat generation and armatures of electric motors to decrease the C. E. M. F.

Figure 2 illustrates how compound elec tromagnetic cycles may be adapted to potential transformers. In this instance it is a four unit transformer. If step-up trans formation is desired then coils 6 would be the primary windings connected either in series or parallel (according to desired turn ratio) and the CO11]])0lll1(lQ(l core coil 5 would be the secondary.

Claimr l. A potential trai'is'former including sep arate core n'ieinbers, a coil. embracing all of the core members, and separate coils mounted on the respective core members, one of said last named coils being provided for each core men'iber, the windings of all of the coils being such that the actual ampere turns of the first mentioned coil will be one-half the combined ampere turns of the last mentioned coil.

2. A potential transformer including separate core members, all of said core members being continuous and unbroken, a coil embracing all of the core members, and separate coils mounted on the respective core members, one of said last named coils being provided for each coil member, the Windings of all of the coils being such that the actual ampere turns of the first mentioned coil will be one-half the combined ai'npere turns of the last mentioned coil, the last mentioned coils being equal.

In testimony that I claim the foregoing'as my own, I have hereto affixed my signature.

BERT J; SIMMONS. 

